Granted Patent
Utility
US 6,031,824 · App. 08/796,033
Maintenance and supervisory control method and system for multiplex communication equipment
Inventors:
Kazumasa Azuma, Kaoru Suzuki, Ikuo Aso, Sakae Watanabe
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Feb 5, 1997
Inventors
Kazumasa Azuma
Kaoru Suzuki
Ikuo Aso
Sakae Watanabe
Assignee (at issue)
Hitachi Telecom Technologies, Ltd
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.